INTERVIEW QUESTIONS J2EE JAVA DETAILS

Question: Can we use different return types for methods when overridden?

Answer: The basic requirement of method overriding in Java is that the overridden method should have same name, and parameters.But a method can be overridden with a different return type as long as the new return type extends the original.

For example , method is returning a reference type.

Java

Class B extends A{

A method(int x){

//original method

}

B method(int x){

//overridden method

}

}
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Class B extends A{

A method(int x){

//original method

}

B method(int x){

//overridden method

}

The basic requirement of method overriding in Java is that the overridden method should have same name, and parameters.But a method can be overridden with a different return type as long as the new return type extends the original.

For example , method is returning a reference type.

Java

Class B extends A{

A method(int x){

//original method

}

B method(int x){

//overridden method

}

}
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Class B extends A{

A method(int x){

//original method

}

B method(int x){

//overridden method

}
Source: CoolInterview.com

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